2. misc-audio
  3. 1313669719

Differences between various Quantum devices

I realise there has been some discussion of Quantum QX4 and QX2 devices. I have seen them at several shows and am sold, personally, on the gains envolved. They are not cheap, but I am all ready to pay for a QX4 and I find new alternatives. Firstly QRT themselves are producing a QV2, a small plug in device for sockets and conditions. This evidently is not the same as QX4 and 2, it uses different technology. Kemp as well have the much cheaper plug in QA plug. So what do I do know?

A big ask I am sure, but has anyone compared the differences and merits of QX4 or 2, with the QV2 and Kemp plug. I would prefer the latter if it works as well, partly for the cost, but also it means I don't have to find room for another shelf in my rack. Thanks David
david12

Showing 3 responses by puremusic

puremusic
226 posts
 
David,

I have the PurePower APS 2000. Plugging in the PP2000 into the QX4 lowered the noise floor significantly in my system. Cleanliness, clarity, and most sonic characteristics improved at a level of a component upgrade. To get the most out of the QX4, you will need to upgrade its power chord (I use the Elrod Statement.) and optimize its placement within your system set-up; I have mine sitting on top of the CD player.

John
puremusic
226 posts
 
David12, My QX4 is plugged into the wall and the PurePower 2000 is plugged into the QX4. The CD player and amplifier are fed by the PurePower (no pre-amp). When needed, the PP has reserve in its battery; so, I have not had current problems with my 600 watt per channel RMS amplifier. In fact, the amplifier sounds better going through the PurePower than directly to the wall.

John
puremusic
226 posts
 
Mauidj, PurePower 2000 is superb; it added clarity, cleanliness and dynamics to my system and provides constant 120V/60Hz power. I bought it from Brent Rainwater at rainwateraudio.com. Brent can answer your question better than I can. Also purepoweraps.com website is very informative.

John
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